Update #0 - First Release

sources/main/java/javax/annotation/CheckForSigned.java

@@ -0,0 +1,22 @@
+package javax.annotation;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.annotation.meta.TypeQualifierNickname;
+import javax.annotation.meta.When;
+
+/**
+ * Used to annotate a value that may be either negative or nonnegative, and
+ * indicates that uses of it should check for negative values before using it in
+ * a way that requires the value to be nonnegative, and check for it being
+ * nonnegative before using it in a way that requires it to be negative.
+ */
+@Documented
+@TypeQualifierNickname
+@Nonnegative(when = When.MAYBE)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface CheckForSigned {
+
+}